CVE-2026-98453

smb: client: close handle after create-context parsing failure

State: Published
Severity: Not scored
Published: Oct 18, 2026
Updated: Oct 30, 2026
Reserved: Sep 25, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

smb: client: close handle after create-context parsing failure

SMB2_open() accounts a successful CREATE response as a remote open before parsing its create contexts. If smb2_parse_contexts() rejects malformed context data, SMB2_open() returns without closing the handle, leaving the server-side handle open and num_remote_opens elevated.

Close the handle after a post-CREATE context parsing failure so the error path releases the remote resource and balances the open count.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	13fb0fc4917621f3dfa285a27eaf7151d770b5e5 to before d4c05b5cb0a3132453e36a300d45de44bf6783c4Affected 890bc4fac3c0973a49cac35f634579bebba7fe48 to before ee61f1dc516d97afa79908140d0a8c556c2fe90cAffected 1ae3c59355dc9882e09c020afe8ffbd895ad0f29 to before 007b87f6a7c38959ed79cf7d3fd7b3b4eb5f67fdAffected 17a0f64cc02d4972e21c733d9f21d1c512963afa to before eaa97a196a107d4ef8775df2248181624151812eAffected af1689a9b7701d9907dfc84d2a4b57c4bc907144 to before 80c67cc71d32ccafc89a29b669243b40d81b930fAffected af1689a9b7701d9907dfc84d2a4b57c4bc907144 to before f09875ff901e933e7b22c913daf51d21e9d93a45Affected af1689a9b7701d9907dfc84d2a4b57c4bc907144 to before cdb36b09fb1f86d638d0afb44d621ed3f7c1d8ebAffected af1689a9b7701d9907dfc84d2a4b57c4bc907144 to before 566820af017e81497fb5e9d3ad6e7ffe2828bc8bAffected 6726429c18c62dbf5e96ebbd522f262e016553fbAffected 5.10.211 to before 5.10.273Affected 5.15.150 to before 5.15.224Affected 6.1.79 to before 6.1.191Affected 6.6.8 to before 6.6.160Affected 5.4.277 to before 5.5Affected
LinuxLinux	6.7Affected before 6.7Not affected 5.10.273 through 5.10.Not affected 5.15.224 through 5.15.Not affected 6.1.191 through 6.1.Not affected 6.6.160 through 6.6.Not affected 6.12.113 through 6.12.Not affected 6.18.56 through 6.18.Not affected 7.2.9 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

13fb0fc4917621f3dfa285a27eaf7151d770b5e5 to before d4c05b5cb0a3132453e36a300d45de44bf6783c4Affected
890bc4fac3c0973a49cac35f634579bebba7fe48 to before ee61f1dc516d97afa79908140d0a8c556c2fe90cAffected
1ae3c59355dc9882e09c020afe8ffbd895ad0f29 to before 007b87f6a7c38959ed79cf7d3fd7b3b4eb5f67fdAffected
17a0f64cc02d4972e21c733d9f21d1c512963afa to before eaa97a196a107d4ef8775df2248181624151812eAffected
af1689a9b7701d9907dfc84d2a4b57c4bc907144 to before 80c67cc71d32ccafc89a29b669243b40d81b930fAffected
af1689a9b7701d9907dfc84d2a4b57c4bc907144 to before f09875ff901e933e7b22c913daf51d21e9d93a45Affected
af1689a9b7701d9907dfc84d2a4b57c4bc907144 to before cdb36b09fb1f86d638d0afb44d621ed3f7c1d8ebAffected
af1689a9b7701d9907dfc84d2a4b57c4bc907144 to before 566820af017e81497fb5e9d3ad6e7ffe2828bc8bAffected
6726429c18c62dbf5e96ebbd522f262e016553fbAffected
5.10.211 to before 5.10.273Affected
5.15.150 to before 5.15.224Affected
6.1.79 to before 6.1.191Affected
6.6.8 to before 6.6.160Affected
5.4.277 to before 5.5Affected

LinuxLinux

6.7Affected
before 6.7Not affected
5.10.273 through 5.10.*Not affected
5.15.224 through 5.15.*Not affected
6.1.191 through 6.1.*Not affected
6.6.160 through 6.6.*Not affected
6.12.113 through 6.12.*Not affected
6.18.56 through 6.18.*Not affected
7.2.9 through 7.2.*Not affected
7.3 and laterNot affected

References

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